# Can I get a pair of schottky diodes in a single chip?

I'm building a motor driver circuit, and am looking at diodes to clamp the output voltage between the supply rails. Apparenly, I should use schottky diodes for this purpose.

My question is, are there ICs out there than contain a pair of diodes arranged as shown below?

┌───►|──┬──►|───┐
│       │       │
0V      S       V+


Or should I just buy a pair of single diodes?

• Why the downvote? It seems like a great question to me, sometimes just finding the right name or search terms is all thats needed to answer questions, doesn't make it a bad question though. – Kellenjb May 2 '11 at 14:37
• Why do you need Schottky diodes? – starblue May 2 '11 at 18:58

## 2 Answers

They're simply called "double Schottky diodes" :-). They often come in different configurations, like for instance the BAT54:

BAT54A: common anode
BAT54C: common cathode
BAT54S: in series, one diode's cathode connects to the other's anode
BAT54: is the single diode version

• Do these exist in 0.1" through-hole packages? – Eric May 2 '11 at 15:46
• @Eric; see vishay.com/docs/94554/8sth06.pdf for a TO220 (0.1") package, as mentioned in my answer. Although such a device may be overkill with its 600V rating... – Thomas O May 2 '11 at 17:17

Yes, such devices do exist; they are known as dual Schottky or dual diodes.

The most common arrangement is two diodes with a common cathode; these are used in switch mode power supplies to boost the allowable current from a typical single diode in package.

However, dual series diodes do exist; here is one example of a power device: VS-8STH06FP.

Another example of a device not intended for high power applications is BAV99W, which is a very popular device.